Simplest would be to enable spanning tree protocol. I also noticed that the HP A5500 supports stacking via its 10G ports, but I'm not sure if that feature is available on the Procurve switches, so I doubt that you will be able to use that...

David Varnum recently wrote up his impressions of PRTG, based on a presentation by my colleague Christian at Tech Field Day at VMworld in Barcelona.
Thanks David, for your detailed and honest evaluation!

Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail. The methods are covered in more detail in o…

In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…